This is a non-randomized device efficacy trial. Patients with >20cc Supratentorial ICH and an invasive brain temperature monitor (either Licox or Temperature sensing intracranial pressure device) will be enrolled after consent. The Excel Cryo Cooling System collar will be placed around neck in up to 20 patients for two hours. The goal is to determine the effectiveness of this device in cooling the brain. The collar is a standard neck collar used for patients after neck surgery with a modification that allows for the placement of a cooling pack in the collar that delivers the cold. During the study and for two hours after, the investigators will collect data concerning the brain temperature, body temperature, brain oxygen level and pressure both in the head and in the blood (blood pressure). The investigators will also collect demographic information about you (i.e. age, gender, medical risk factors) and information regarding your current disease process.